Psychophysiological stress reactions,trapezius muscle activity,and neck and shoulder pain among female cashiers before and after introduction of job rotation

The aim of this study was to evaluate the effects of the introduction of a job rotation model on supermarket cashiers, with respect to psychophysiological stress reactions, muscle activity of the trapezius muscle (which covers the upper back, the neck and the shoulder), and musculoskeletal symptoms in the neck and shoulders. Thirty-one female cashiers were investigated before and after job rotation was introduced. Before the reorganization the participants were only performing cash register work at the checkout counters. After the reorganization they shifted between cash register work and work in different departments in the supermarket. At follow-up the participants, all right-handed, had a significantly lower diastolic blood pressure, and surface electromyography (EMG) showed a significantly decreased muscle activity in the trapezius muscle on the left side. Musculoskeletal symptoms of the neck and shoulders were only partly changed, and there was no change in prevalence of musculoskeletal pain, which was around 70%. From questionnaires, but not from self-ratings during work, it was found that the introduction of job rotation had been experienced as positive in several regards, although the perceptions of stress and hurry were the same at follow-up.     

The Job Demand-Control (-Support) Model and psychological well-being: A review of 20 years of empirical research

The Job Demand-Control (JDC) model (Karasek, 1979) and the Job Demand-Control-Support (JDCS) model (Johnson, and Hall, 1988) have dominated research on occupational stress in the last 20 years. This detailed narrative review focuses on the JDC(S) model in relation to psychological well-being. It covers research from 63 samples, published in the period 1979-1997. In the review a distinction is drawn between two different hypotheses prevailing in research on the models. According to the strain hypothesis of the JDC model, employees working in a high-strain job (high demands-low control) experience the lowest well-being. The buffer hypothesis states that control can moderate the negative effects of high demands on well-being. Translating these hypotheses to the expanded JDCS model, the iso-strain hypothesis predicts the most negative outcomes among workers in an iso-strain job (high demands-low control-low social support/isolation), whereas the buffer hypothesis states that social support can moderate the negative impact of high strain on well-being. Although the literature gives considerable support for the strain and iso-strain hypotheses, support for the moderating influence of job control and social support is less consistent. The conceptualization of demands and control is a key factor in discriminating supportive from nonsupportive studies. Only aspects of job control that correspond to the specific demands of a given job moderate the impact of high demands on well-being. Furthermore, certain subpopulations appear to be more vulnerable to high (iso)strain, whereas others benefit more from high control. On the basis of the results of this review, suggestions for future research and theoretical development are formulated.     

Stress demands on school administrators in Singapore

Abstract

This study investigated the use of the Occupational Stress Indicator (OSI) on school administrators in Singapore. The sample of 223 school administrators consisted of the top management group of principals and vice-principals and the middle management group of heads of department. The school administrators reported pressure at work, and consequently, higher levels of mental and physical ill health. They had high locus of control scores, indicating low internal control over their environment. However, they also reported greater use of coping strategies and higher job satisfaction. Psychometrically, the sub-scales of sources of pressure, job satisfaction, and mental and physical ill health were found to be reliable. The items of the scales of type A, locus of control and coping skills had to be re-factor analysed for the Singaporean sample. The new factors were found to have higher reliability. When the stress and job satisfaction levels of the principals/vice-principals and heads of department were compared, the heads of department reported significantly less job satisfaction and higher levels of mental and physical ill health. They perceived less internal control in their work situation.     

人岗匹配视角下的教师工作倦怠

工作倦怠问题是教师专业发展的严重障碍。从人岗匹配的角度来看,过高的工作负荷、不良的人际环境、过低的工作回报和职务分析的不足是教师倦怠的主要原因,而创建和谐宽松的教育环境、规范科学的教师资格认证体系、积极稳妥地开展教师培训和建立合理的教师报酬体系则是干预和预防教师工作倦怠问题的有效措施。     

The 'Dole or Drudgery' Dilemma: Education, the Work Ethic and Unemployment

Before the recession, Labour ministers claimed that much unemployment in the UK was voluntary. While social policy authors have repeatedly countered such claims by stressing that unemployed people generally possess a strong work ethic and employment commitment, their accounts typically neglect the role that choosiness in job search behaviour plays in deciding individuals' employment status. Fifty in‐depth interviews with both unemployed and employed respondents exposed considerable diversity in attitudes towards ‘dole’ (being unemployed and claiming unemployment benefits) and ‘drudgery’ (doing less attractive jobs). The more educated were more likely to prefer ‘dole’ to ‘drudgery’ (this was also found using National Child Development Study survey data), yet they usually found jobs despite their greater choosiness. Those with very low educational attainment often desperately wanted jobs but could not find them due to their low employability – which might offer an explanation for the often replicated (yet paradoxical) finding that unemployed people generally exhibit a strong work ethic and pro‐employment attitudes and behaviours. Furthermore, the findings indicate that the scope for many Jobseeker's Allowance claimants to increase their net income by undertaking an unattractive job is greater than social policy authors often imply. The question of ‘who must do the least attractive jobs?’ has been neglected by both social policy academics and policy‐makers.     

A simulated annealing algorithm for job shop scheduling

In this paper, the job shop scheduling problem is considered with the objective of minimization of makespan time. We first reviewed the literature on job shop scheduling using meta-heuristics. Then a simulated annealing algorithm is presented for scheduling in a job shop. To create neighbourhoods, three perturbation schemes, viz. pairwise exchange, insertion, and random insertion are used, and the effect of them on the final schedule is also compared. The proposed simulated annealing algorithm is compared with existing genetic algorithms and the comparative results are presented. For comparative evaluation, a wide variety of data sets are used. The proposed algorithm is found to perform well for scheduling in the job shop.     

Helping people to sort it out: The role of social support in the Job Strain Model

This paper reports three studies of occupational stress investigating the role of social support as an intervening variable in the Job Strain Model (Karasek, 1979). A computer simulated mail-sorting work environment was used to assess the effect of demands, control and social support on measures of strain, satisfaction, and perceived and actual task performance. The first experiment ( N =60) tests the basic Job Strain Model by manipulating levels of task demand and control. The second experiment ( N =120) compares high and low levels of two types of social support (informational support and emotional support) to determine whether and how they interact with extreme conditions of the Job Strain Model (high strain and low strain). The final experiment ( N =90) investigates positive and negative forms of social support (praise and criticism) in relation to extreme job strain conditions. Results show that the job strain model is consistent with the stress and performance data, although stress showed no Demand ×Control interaction. Social supports increased arousal, satisfaction and perceived performance, but did not affect stress or task performance. Moreover, contrary to buffer theories, social supports did not interact with the job strain variables. Congruence between preferred and experienced emotional support levels also predicted performance.     

Results of a Quality of Work Life Index in Spain. A Comparison of Survey Results and Aggregate Social Indicators

The European Union launched the Lisbon Strategy in 2000 with the aim of establishing itself as the world’s most powerful economy. The importance of job quality has returned to the top of the European employment and social policy agenda. As targets are set, significant progress has been made in the creation of indicators. In this study, we compute a composite index for quality of work life using the dimensional structure provided by the European Commission, and present our results for regions, sectors, professional categories and sizes of firm in Spain in the period 2001–2004. We find that better results are found in the more developed regions, in service sectors, in bigger firms and in jobs with more responsibility. Finally, we compare the results of the index with workers’ subjective perceptions of job satisfaction, measured by a quality of work life survey. The test results reveal a strong relationship between the two measurements.     

农民工的学习过程研究——基于北京城市建筑工人的调查

本文对农民打工前和打工中的学习过程进行了调查和分析,结果表明,正是学习促进了农民工人力资本的提升。而目前农民工的学习过程中还存在很多问题,尤其是缺乏有效的组织过程,学习效率不高。因此,各级政府应加强向农民工人力资本和社会资本的投资,以提高其学习的效率,实现农村劳动力的顺利转移。     

The physical activity-mediated Demand–Control (pamDC) model: Linking work characteristics,leisure time physical activity,and well-being

Only recently has research begun to investigate the interplay between work characteristics, leisure time physical activity (LTPA), health, and well-being. So far, however, this research lacks a theoretical foundation. In this article, we introduce the physical activity-mediated Demand–Control (pamDC) model as a new theoretical framework. The two key ideas of the pamDC model are (1) that job demands and job control affect LTPA and (2) that LTPA partially mediates the effects of job demands and job control on health and well-being. We present eight propositions explaining how work characteristics affect LTPA, health, and well-being. For each of these propositions, we discuss empirical evidence and theoretical foundations. We then sketch a research agenda on how to adopt the pamDC model as a new theoretical framework for future research linking work characteristics, LTPA, and health. Finally, we discuss the practical implications of our new model.